CVE-2025-13656: Cute News Ticker WordPress Plugin XSS

CVE-2025-13656 Overview

CVE-2025-13656 is a Stored Cross-Site Scripting (XSS) vulnerability in the Cute News Ticker plugin for WordPress. The flaw affects all versions up to and including 1.0. It resides in the color attribute of the plugin's shortcode, which fails to properly sanitize input or escape output. Authenticated users with Contributor-level access or higher can inject arbitrary JavaScript into pages. The malicious script executes in the browser of any visitor who accesses the affected page. The vulnerability is tracked under CWE-79 and was published to the National Vulnerability Database on December 6, 2025.

Critical Impact
Authenticated contributors can inject persistent JavaScript that runs in the context of any site visitor, including administrators, enabling session theft, redirection, and administrative account takeover.

Affected Products

Cute News Ticker plugin for WordPress — all versions through 1.0
WordPress sites where Contributor-level (or higher) accounts exist
Any published page or post rendering the plugin's shortcode with a color attribute

Discovery Timeline

2025-12-06 - CVE-2025-13656 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-13656

Vulnerability Analysis

The Cute News Ticker plugin exposes a shortcode that accepts a color attribute intended to style ticker output. The plugin passes the attribute value into rendered HTML without sanitizing input or escaping output. An authenticated user with at least Contributor privileges can supply a crafted color value containing HTML or JavaScript payloads. When the shortcode renders on the front end, the browser executes the injected script in the origin of the WordPress site. Because the payload is stored in post content, every visitor who loads the page triggers execution, making this a persistent (stored) XSS. Successful exploitation can hijack authenticated sessions, perform actions on behalf of higher-privileged users, or pivot to administrative takeover through forged nonce-authenticated requests.

Root Cause

The root cause is missing input sanitization and missing output escaping on the color shortcode attribute within the plugin's main-function.php handler, referenced at line 60 of the tagged 1.0 source. Values passed through the shortcode are concatenated into an HTML style or attribute context and echoed to the page without invoking a WordPress escaping function such as esc_attr() or a sanitizer such as sanitize_hex_color().

Attack Vector

Exploitation requires an authenticated account with Contributor role or above. The attacker inserts the plugin shortcode into a post or page and supplies a malicious value in the color parameter that breaks out of the intended attribute context. When any user, including an administrator, views the rendered page, the payload executes in their browser session. No user interaction beyond navigating to the page is required. See the Wordfence advisory for additional technical context.

Detection Methods for CVE-2025-13656

Indicators of Compromise

Posts or pages containing the Cute News Ticker shortcode with color values that include characters such as ", <, >, or javascript:
Database rows in wp_posts where post_content contains the plugin shortcode alongside <script>, onerror=, or onload= tokens
Unexpected outbound requests from visitor browsers to attacker-controlled domains after loading affected pages
New administrator accounts or modified user roles created shortly after a Contributor user edits ticker-enabled content

Detection Strategies

Query the WordPress database for shortcode instances containing suspicious color attribute values and review each occurrence.
Deploy a web application firewall rule that inspects saved post content for shortcode attributes containing HTML control characters.
Enable content security policy (CSP) reporting to surface inline script executions originating from post content.
Review WordPress audit logs for Contributor accounts editing posts that render the plugin shortcode.

Monitoring Recommendations

Monitor administrative session cookies and privileged action logs for anomalies following visits to ticker-enabled pages.
Alert on creation or modification of user accounts, especially privilege elevations to Administrator.
Track plugin file integrity to detect tampering or unauthorized reinstallation of the vulnerable version.
Correlate front-end JavaScript errors and CSP violations with authenticated Contributor activity timelines.

How to Mitigate CVE-2025-13656

Immediate Actions Required

Deactivate and remove the Cute News Ticker plugin until a patched release is available from the maintainer.
Audit all posts and pages for the plugin's shortcode and remove any instances containing suspicious color values.
Review Contributor, Author, and Editor accounts; disable or reset credentials for any account that is unrecognized or inactive.
Rotate administrator passwords and invalidate active sessions to defeat any stolen authentication cookies.

Patch Information

At the time of NVD publication, no patched version of the Cute News Ticker plugin is listed. All versions through 1.0 are affected. Monitor the official plugin page and the Wordfence advisory for a fixed release, and apply the update immediately once available.

Workarounds

Restrict Contributor-level and above access to trusted users only, and require multi-factor authentication for all content editors.
Configure a web application firewall to block shortcode submissions containing HTML control characters in the color attribute.
Apply a strict Content Security Policy that disallows inline scripts and unsafe event handlers to reduce XSS payload impact.
Replace the plugin with a maintained alternative that properly escapes shortcode attributes using WordPress sanitization APIs.

bash

# Configuration example: locate vulnerable shortcode usage via WP-CLI
wp post list --post_type=any --format=ids | \
  xargs -I {} wp post get {} --field=content | \
  grep -iE 'cute[_-]?news[_-]?ticker.*color='